1003120042 has 8 divisors (see below), whose sum is σ = 1504879236. Its totient is φ = 501493632.

The previous prime is 1003120031. The next prime is 1003120043. The reversal of 1003120042 is 2400213001.

It can be written as a sum of positive squares in 2 ways, for example, as 1002925561 + 194481 = 31669^2 + 441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1003120042³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1003120043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11463 + ... + 46234.

Almost surely, 2^1003120042 is an apocalyptic number.

1003120042 is a deficient number, since it is larger than the sum of its proper divisors (501759194).

1003120042 is an equidigital number, since it uses as much as digits as its factorization.

1003120042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66392.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1003120042 is about 31672.0703775424. The cubic root of 1003120042 is about 1001.0389342418.

Adding to 1003120042 its reverse (2400213001), we get a palindrome (3403333043).

The spelling of 1003120042 in words is "one billion, three million, one hundred twenty thousand, forty-two".